skins2(x11): fix Drag&Drop issues on X11.
this patch fixes issues that limited the scope of Drag&Drop. - set the version number to the latest one (version 5 in 2003!) - ensure the data type is not hardcoded but selected at runtime. - add a XSync to ascertain full completion of Drag and Drop. - protect against possible overflow - add some debugging info (cherry picked from commit c5213920) Signed-off-by: Erwan Tulou <firstname.lastname@example.org>
Showing with 38 additions and 28 deletions